Sensitivity and discovery potential of the proposed nEXO experiment to neutrinoless double- β decay

J. B. Albert, G. Anton, I. J. Arnquist, I. Badhrees, P. Barbeau, D. Beck, V. Belov, F. Bourque, J. P. Brodsky, E. Brown, T. Brunner, A. Burenkov, G. F. Cao, L. Cao, W. R. Cen, C. Chambers, S. A. Charlebois, M. Chiu, B. Cleveland, M. CoonA. Craycraft, W. Cree, M. Côté, J. Dalmasson, T. Daniels, S. J. Daugherty, J. Daughhetee, S. Delaquis, A. Der Mesrobian-Kabakian, R. Devoe, T. Didberidze, J. Dilling, Y. Y. Ding, M. J. Dolinski, A. Dragone, L. Fabris, W. Fairbank, J. Farine, S. Feyzbakhsh, R. Fontaine, D. Fudenberg, G. Giacomini, R. Gornea, K. Graham, G. Gratta, E. V. Hansen, D. Harris, M. Hasan, M. Heffner, E. W. Hoppe, A. House, P. Hufschmidt, M. Hughes, J. Hößl, Y. Ito, A. Iverson, A. Jamil, M. Jewell, X. S. Jiang, T. N. Johnson, S. Johnston, A. Karelin, L. J. Kaufman, R. Killick, T. Koffas, S. Kravitz, R. Krücken, A. Kuchenkov, K. S. Kumar, Y. Lan, D. S. Leonard, G. Li, S. Li, Z. Li, C. Licciardi, Y. H. Lin, R. Maclellan, T. Michel, B. Mong, D. Moore, K. Murray, R. J. Newby, Z. Ning, O. Njoya, F. Nolet, K. Odgers, A. Odian, M. Oriunno, J. L. Orrell, I. Ostrovskiy, C. T. Overman, G. S. Ortega, S. Parent, A. Piepke, A. Pocar, J. F. Pratte, D. Qiu, V. Radeka, E. Raguzin, T. Rao, S. Rescia, F. Retiere, A. Robinson, T. Rossignol, P. C. Rowson, N. Roy, R. Saldanha, S. Sangiorgio, S. Schmidt, J. Schneider, A. Schubert, D. Sinclair, K. Skarpaas, A. K. Soma, G. St-Hilaire, V. Stekhanov, T. Stiegler, X. L. Sun, M. Tarka, J. Todd, T. Tolba, R. Tsang, T. Tsang, F. Vachon, V. Veeraraghavan, G. Visser, P. Vogel, J. L. Vuilleumier, M. Wagenpfeil, Q. Wang, M. Weber, W. Wei, L. J. Wen, U. Wichoski, G. Wrede, S. X. Wu, W. H. Wu, L. Yang, Y. R. Yen, O. Zeldovich, J. Zettlemoyer, X. Zhang, J. Zhao, Y. Zhou, T. Ziegler

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141 Scopus citations


The next-generation Enriched Xenon Observatory (nEXO) is a proposed experiment to search for neutrinoless double-β (0νββ) decay in Xe136 with a target half-life sensitivity of approximately 1028 yr using 5×103 kg of isotopically enriched liquid-xenon in a time projection chamber. This improvement of two orders of magnitude in sensitivity over current limits is obtained by a significant increase of the Xe136 mass, the monolithic and homogeneous configuration of the active medium, and the multiparameter measurements of the interactions enabled by the time projection chamber. The detector concept and anticipated performance are presented based upon demonstrated realizable background rates.

Original languageEnglish
Article number065503
JournalPhysical Review C
Issue number6
StatePublished - Jun 15 2018

Bibliographical note

Funding Information:
We gratefully acknowledge the support of SNOLAB for the gamma and radon assay work conducted on site. We thank Mitchell Negus for contributing to the simulation work. This work has been supported by the Offices of Nuclear and High Energy Physics within DOE's Office of Science, and NSF in the United States; by NSERC, CFI, FRQNT, NRC, and the McDonald Institute (CFREF) in Canada; by SNF in Switzerland; by IBS in Korea; by RFBR in Russia; and by CAS and ISTCP in China. This work was supported in part by Laboratory Directed Research and Development (LDRD) programs at Brookhaven National Laboratory (BNL), Lawrence Livermore National Laboratory (LLNL), Oak Ridge National Laboratory (ORNL), and Pacific Northwest National Laboratory (PNNL).

Publisher Copyright:
© 2018 American Physical Society.

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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